Question: What is known   writer of Shakespeare's sonnets ?
Paraphrase: What is known author of Shakespeare's pieces ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q662550 wdt:P50 ?X . ?X wdt:P800 ?answer}
Answer: Othello, Hamlet, The Two Noble Kinsmen, Romeo and Juliet, The Tempest, A Midsummer Night's Dream, Love's Labour's Lost, Macbeth, Much Ado About Nothing, King Lear, Troilus and Cressida, The Merchant of Venice, Julius Caesar, Twelfth Night, The Two Gentlemen of Verona, As You Like It, Titus Andronicus, Timon of Athens, The Taming of the Shrew, Coriolanus, Henry V, The Comedy of Errors, All's Well That Ends Well, Pericles, Prince of Tyre, Antony and Cleopatra, Henry IV, Part 1, Henry VI, Part 1, Richard II, Richard III, King John, Shakespeare's sonnets, Measure for Measure, Henry VIII, Cymbeline, The Winter's Tale, The Merry Wives of Windsor, Henry IV, Part 2, Henry VI, Part 2, Henry VI, Part 3